The work has dealt with the study of sulphide and oxide overlayers on a Ni(111) single crystal sample, applying the surface science techniques of Auger Electron Spectroscopy, Low Energy Electron Diffraction and Reflection Absorption Infra-Red Spectroscopy. The later technique has been used to probe these layers at pressures up to 100's of Torr revealing novel features for the absorption of carbon monoxide and hydrogen not previously observed on this crystal face. The absorption of CO under UHV conditions was also studied using Reflection Absorption Infra-Red Spectroscopy on the sulphide and oxide overlayers prepared. The data obtained from the experiments yielded information on coverage, thermodynamic, isobaric and isothermal parameters. The sulphide layers investigated were the (39x39)-S, (53x2)-S, (83x2)-S and a layer designated S1 in this work which had no literature equivalent. Two oxide layers were studied, a well characterised p(2x2)-O overlayer prepared by classical methods and a more heavily oxidised NiO/p(2x2)-O surface prepared by continuous oxidation of the sample. AES and LEED were used as experimental probes to complement the infra-red data as well as during the initial surface preparation.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:649576 |
| Date | January 1997 |
| Creators | Dixon, Richard Thomas |
| Publisher | University of Edinburgh |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://hdl.handle.net/1842/13659 |
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